<template>
  <view v-if="goods_info.goods_name" class="goods-detail-container">
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(item, i) in goods_info.pics" :key="i">
        <image :src="item.pics_big" @click="preview(i)"></image>
      </swiper-item>
    </swiper>
    
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="goods-price">￥{{goods_info.goods_price}}</view>
      <!-- 商品信息主体 -->
      <view class="goods-info-body">
        <!-- 商品名称 -->
        <view class="goods-name">{{goods_info.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="goods-express">运费：免运费</view>
    </view>
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <!-- 商品导航组件区域 -->
    <view class="goods_nav">
      <uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  import {mapState, mapMutations, mapGetters} from 'vuex'
  export default {
    computed: {
      ...mapState('m_cart', []),
      ...mapGetters('m_cart', ['total'])
    },
    watch: {
      // total(newVal) {
      //  const findResult = this.options.find(x => x.text === '购物车')
      //  if(findResult) {
      //    findResult.info = newVal
      //  }
      // }
      total: {
        handler(newVal) {
          const findResult = this.options.find(x => x.text === '购物车')
           if(findResult) {
             findResult.info = newVal
           }
        },
        immediate: true
      }
    },
    data() {
      return {
        goods_info: {},
        options: [{
        			icon: 'shop',
        			text: '店铺',
        			infoBackgroundColor:'#007aff',
        			infoColor:"red"
        		}, {
        			icon: 'cart',
        			text: '购物车',
        			info: 0
        		}],
        	    buttonGroup: [{
        	      text: '加入购物车',
        	      backgroundColor: '#ff0000',
        	      color: '#fff'
        	    },
        	    {
        	      text: '立即购买',
        	      backgroundColor: '#ffa200',
        	      color: '#fff'
        	    }
        	    ]
      };
    },
    onLoad(option) {
      const goods_id = option.goods_id
      this.getGoodsDetail(goods_id)
    },
    methods: {
      ...mapMutations('m_cart', ['addToCart']),
     async getGoodsDetail(goods_id) {
       const {data: res} = await uni.$http.get('https://api-ugo-web.itheima.net/api/public/v1/goods/detail', {goods_id})
       if(res.meta.status !== 200) return uni.$showMsg()
       res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display:block;"').replace(/webp/g, 'jpg')
       this.goods_info = res.message
      },
      preview(i) {
        uni.previewImage({
          count: i,
          urls: this.goods_info.pics.map(x => x.pics_big)
        })
      },
      onClick(e) {
        if(e.content.text === '购物车') {
          uni.switchTab({
            url: '/pages/cart/cart'
          })
        }
      },
      buttonClick(e) {
        if(e.content.text === '加入购物车') {
          // 组织商品信息
          const goods = {
            goods_id: this.goods_info.goods_id,
            goods_name: this.goods_info.goods_name,
            goods_price: this.goods_info.goods_price,
            goods_small_logo: this.goods_info.goods_small_logo,
            goods_count: 1,
            goods_state: true
          }
          // 调用addToCart方法
          this.addToCart(goods)
        }
      }
    }
  }
</script>

<style lang="scss">
  swiper {
    height: 750rpx;
  }
  image {
    width: 100%;
    height: 100%;
  }
  .goods-info-box {
    padding: 10px;
    padding-right: 0;
    
    .goods-price {
      fonst-size: 18px;
      color: #C00000;
      margin: 10px 0;
    }
    .goods-info-body {
      display: flex;
      justify-content: space-between;
      .goods-name {
        font-size: 13px;
        margin-right: 10px;
      }
      .favi {
        width: 120px;
        font-size: 12px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        border-left: 1px solid #efefef;
        color: gray;
      }
    }
    .goods-express {
      font-size: 12px;
      color: gray;
      margin: 10px 0;
    }
  }
  .goods_nav {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
    }
    .goods-detail-container {
      padding-bottom: 50px;
    }
</style>
